Adds original copyright notice to refactored files

Fixes bug: #1116586

The Hyper-V driver contributed for Folsom contains some refactored code
from the Diablo release contributed by Cloud.com.

Although the copyright notice remained in the "driver.py" file, it has
erroneously not been added to the new "vmops.py" and "vmutils.py" files
that contained some refactored code from the original contribution.

Change-Id: I71cf1df30c0b2ef5ae3df38f3c6f0311b7b4b3d9
Merge "Adds original copyright notice to refactored files"